package org.xwarelabs.staf.sut.listener;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.logging.Logger;

/* Copyright (c) 2009, William Cai, william.cai@gmail.com
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *    "This product is written by William Cai (william.cai@gmail.com)"
 *
 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * 
 * The licence and distribution terms for any publically available version or
 * derivative of this code cannot be changed.  i.e. this code cannot simply be
 * copied and put under another distribution licence
 */


public class SutListener {
	
	private Logger logger = Logger.getLogger(this.getClass().getCanonicalName());
	
	private static int port = 9222; // the default port number is 9222 

	private void readProperties() {
		String port = System.getProperty("sut.listener.port");
		if (port != null) {
			try {
				this.port = Integer.valueOf(port);
			} catch (NumberFormatException ex) {
				logger.warning("invalid sut.listener.port value: " + port);
			}
		}
	}
	
	/**
	 * A simple server to interact w/ TCM
	 * @param args
	 * @throws Exception
	 */
	public static void main(String[] args) throws Exception {
		
		ServerSocket ss = new ServerSocket(port);
		// print out
		System.out.println("Stand by, listen on " + port + " ...");
		
		while (true) {
			Socket socket = null;
			BufferedReader in = null;
			PrintWriter out = null;
			try {
				socket = ss.accept();
				in = new BufferedReader(new InputStreamReader(
						socket.getInputStream()));
				out = new PrintWriter(socket.getOutputStream(), true);
				String line = in.readLine();
		
				// execute the command
				Executor executor = new Executor(line);
				String ret = executor.invoke();
				
				// inform TCM
				out.println(ret);
				
			} catch (IOException ex) {
				ex.printStackTrace();
			} finally {
				try {
					in.close();
					out.close();
					socket.close();
				} catch (Exception ex) {
					// do nothing here
				}
			}
			
		}
	}

}


